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ChemInform Abstract: Stereoselectivity in the Wittig Reaction of Aromatic Ketones: Origin of Preference for the Olefin Geometry.

✍ Scribed by K. TAKEUCHI; J. W. PASCHAL; R. J. LONCHARICH


Book ID
112023074
Publisher
John Wiley and Sons
Year
2010
Weight
30 KB
Volume
26
Category
Article
ISSN
0931-7597

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The Reaction of Ξ±,Ξ²-Acetylenic Ketones with Dicyclohexylborane: Stereoselective Synthesis of Functionalized Trisubstituted Olefins. -Ξ±,Ξ²-Acetylenic ketones (I) (6 compounds) undergo 1,4-addition of dicyclohexylborane to give allenoxyborinate intermediates which react with excess starting ketone to